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Run results for:
for vs foreach vs for..of vs for..of over entries
Compare loop performance
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<iframe src="https://measurethat.net/Embed?id=559541" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
Browser:
Chrome 129
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
for..of
319K/s
foreach
317K/s
for..of over entries
299K/s
for
126K/s
View exact numbers
Test name
Executions per second
✓
for..of
319,105 Ops/sec
foreach
316,830 Ops/sec
for..of over entries
299,255 Ops/sec
for
126,444 Ops/sec
Script Preparation code:
var array = Array.from({length: 100}); var t;
Tests:
for
for (let i = 0; i < array.length; i++) { t = array[i]; }
foreach
array.forEach(function(v, i) { t = v; });
for..of
for (var v of array) { t = v; }
for..of over entries
for (var [i, v] of array.entries()) { t = v; }